31384030836 has 24 divisors (see below), whose sum is σ = 73312929760. Its totient is φ = 10449411552.

The previous prime is 31384030807. The next prime is 31384030903. The reversal of 31384030836 is 63803048313.

It is a junction number, because it is equal to n+sod(n) for n = 31384030794 and 31384030803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1480546 + ... + 1501593.

Almost surely, 2^31384030836 is an apocalyptic number.

It is an amenable number.

31384030836 is an abundant number, since it is smaller than the sum of its proper divisors (41928898924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31384030836 is a wasteful number, since it uses less digits than its factorization.

31384030836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983023 (or 2983021 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 31384030836 in words is "thirty-one billion, three hundred eighty-four million, thirty thousand, eight hundred thirty-six".